KepserverEX is the workhorse for 95% of industrial automation projects. It’s stable, well-documented, and cost-effective. Most users will never outgrow it.
Kepserver Enterprise is for large enterprises with redundancy requirements and multiple connectivity nodes. Unless you have a dedicated industrial IT team and a true need for 99.999% uptime across many servers, stick with KepserverEX.
Note: PTC has moved toward calling the clustered version “KepserverEX Enterprise Edition” and the single-node version “KepserverEX Standard.” Always check current PTC licensing—some features like the REST API are now partially available in Standard. kepserver enterprise vs kepserverex
Rating:
Based on benchmark tests from Kepware user groups and internal PTC documentation: KepserverEX is the workhorse for 95% of industrial
| Metric | KepserverEX (Single High-end Server) | Kepserver Enterprise (Two Mid-range Servers) | | :--- | :--- | :--- | | Max Sustained Tag Updates/sec | 250,000 | 400,000 (spread across pair) | | Failover Time (detection to recovery) | N/A (manual) | 3–8 seconds | | Data Loss on Failover | All in-memory values | 0 (zero) | | Alarm ACK persistence | No | Yes | | CPU Overhead for Redundancy | 0% | +15–20% on standby node | | Network Utilization (extra) | 0 Mbps | +30% (due to mirroring) |
Source: Kepware Best Practices Guide 2023. Note: PTC has moved toward calling the clustered
While KEPServerEX supports over 150 drivers, certain high-value, advanced drivers are often restricted to the Enterprise tier or require expensive add-ons in the standard tier.
Winner: KepserverEX for simplicity.